/*
 * Copyright (C) 2013 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.squareup.picasso;

import ohos.agp.components.element.Element;
import ohos.media.image.PixelMap;

import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;

import static com.squareup.picasso.Picasso.Priority;

abstract class Action<T> {
    static class RequestWeakReference<M> extends WeakReference<M> {
        final Action action;

        RequestWeakReference(Action action, M referent, ReferenceQueue<? super M> q) {
            super(referent, q);
            this.action = action;
        }
    }

    final Picasso picasso;
    final Request request;
    final WeakReference<T> target;
    final boolean noFade;
    final int memoryPolicy;
    final int networkPolicy;
    final int errorResId;
    final Element errorDrawable;
    final String key;
    final Object tag;

    boolean willReplay;
    boolean cancelled;
    Action(Picasso picasso, T target, Request request, int memoryPolicy, int networkPolicy,
           int errorResId, Element errorDrawable, String key, Object tag, boolean noFade) {
        this.picasso = picasso;
        this.request = request;
        this.target = target == null ? null : new RequestWeakReference<>(this, target, picasso.referenceQueue);
        this.memoryPolicy = memoryPolicy;
        this.networkPolicy = networkPolicy;
        this.noFade = noFade;
        this.errorResId = errorResId;
        this.errorDrawable = errorDrawable;
        this.key = key;
        this.tag = (tag != null ? tag : this);
    }

    abstract void complete(PixelMap result, Picasso.LoadedFrom from);

    abstract void error(Exception e);

    void cancel() {
        cancelled = true;
    }

    Request getRequest() {
        return request;
    }

    T getTarget() {
        return target == null ? null : target.get();
    }

    String getKey() {
        return key;
    }

    boolean isCancelled() {
        return cancelled;
    }

    boolean willReplay() {
        return willReplay;
    }

    int getMemoryPolicy() {
        return memoryPolicy;
    }

    int getNetworkPolicy() {
        return networkPolicy;
    }

    Picasso getPicasso() {
        return picasso;
    }

    Priority getPriority() {
        return request.priority;
    }

    Object getTag() {
        return tag;
    }

}